<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>小练习</title>
		<style>
			.container{
				background:#f0f0f0 ;
				padding:20px;
				text-align: center;
			}
			.box{
				background: #4caf50;
								color: white;
								width: 60%;
								min-width: 500px;
								max-width: 600px;
								margin: auto;
			}
		</style>
	</head>
	<body>
		<div class="container">
					<div class="box">Lorem ipsum dolor sit amet consectetur adipisicing elit. Fugiat eum vero molestiae reprehenderit cum enim ducimus vel aut dignissimos, distinctio obcaecati aperiam iste officia asperiores animi neque. Cumque, unde eligendi.</div>
				</div>
	</body>
</html>